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Natural Gas Line Question #942069 04/24/09 03:47 AM
Joined: Apr 2000
Posts: 4,859
code33 Offline OP
Roll Me Over
In the pic below, anyone know what the circular thing with a little vent on the bottom that's attached to the unmetered side above the shut-off valve is?
The shut-off valve is highlighted in a circle.

[Linked Image]

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Re: Natural Gas Line Question [Re: code33] #942070 04/24/09 05:05 AM
Joined: Jul 2002
Posts: 1,674
stock87 Offline
Body Damage is Cool
If it was in-line I'd say it was a pressure regulator, but I really don't know with one end open like that.

We're almost all LP gas in this neck of the woods, hence my having to convert all the gas appliances I put in.

Maybe something akin to a pressure relief valve on a water heater? Seems like you don't want it venting to atmosphere though...


My Truck: 1987 XtraCab DLX 22R 4WD 5 Speed Manual
--------------------
"Speed has never killed anyone. Suddenly becoming stationary, that's what gets you." -Jeremy Clarkson
Re: Natural Gas Line Question [Re: stock87] #942071 04/24/09 05:21 AM
Joined: Oct 2004
Posts: 6,332
52degrees Offline
Trail Leader
****
Comes in at 50 psi, goes out at 5 psi. Gotta have something to compare it to...


1990 Montero RS (In pieces... for now)

KG6VNX
Re: Natural Gas Line Question [Re: 52degrees] #942072 04/24/09 07:02 AM
Joined: Dec 2004
Posts: 400
TheBigDog Offline
Mudrunner
Service regulater...
dunno about the US of A, but here our gas comes in low, med or high pressure, depending where you live (old areas are low, all new stuff is high pressure)and has varying pressures in the main, from 3-20 KpA (KiloPascal).Most appliances run on 1 KpA or less, so flow must be regulated...first at the meter to 1.1 KpA, then again at the appliance to 1.0KpA.
<img src="/forums/images/graemlins/kewl.gif" alt="" /> <img src="/forums/images/graemlins/kewl.gif" alt="" />
22 Years in the Plumbing and Gas business this year!


Excuses are for losers.
Re: Natural Gas Line Question [Re: TheBigDog] #942073 04/24/09 07:15 AM
Joined: Oct 2004
Posts: 6,332
52degrees Offline
Trail Leader
****
The open "vent" port allows it to maintain pressure relative to current atmospheric conditions. Keeps the flame fronts nice and even in varying weather.


1990 Montero RS (In pieces... for now)

KG6VNX
Re: Natural Gas Line Question [Re: code33] #942074 04/24/09 06:33 PM
Joined: Apr 2003
Posts: 1,393
ForcedAir_Montero Offline
Body Damage is Cool
... and it CAN and sometimes will, vent to atmosphere at times! Don't let it freak you out if your outside on a hot day and you hear it go, or smell gas for a moment.


-Dave D
Reservoir of Useless Knowledge

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'84&change Monty MPI Turbo, choptop, f&r lsd, swapped in AT- All the goodies!
Re: Natural Gas Line Question [Re: code33] #942075 04/25/09 12:36 AM
Joined: Dec 2001
Posts: 11,727
LRJ4x4 Offline
Web Wheeler
*****
Quote
In the pic below, anyone know what the circular thing with a little vent on the bottom that's attached to the unmetered side above the shut-off valve is?
The shut-off valve is highlighted in a circle.

[Linked Image]


Why do you need to know ?


98 Montero with cold weather package
96 Toyota Land Cruiser, fully locked Mall Machine :-)
Re: Natural Gas Line Question [Re: LRJ4x4] #942076 05/06/09 01:10 AM
Joined: Nov 2007
Posts: 633
reepersteve Offline
Rock Warrior
***
Looks like a a ball valve to me. (for shut off purposes)
If what you are asking about is high lighted. The other two items are regulators.


01' TJ Wangler, 6" Ruff Country X Series, 35" x 12.5" Mickey Thompsons On 15 x 10" rims w/ simi Bead Lock, Matching Warn Bumpers, 9500xi Warn Wench, Tom Woods Drive Shaft And SYE, And A K+N Cool Air Intake. Still Improving







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